Metalink Corp.

Amir Leshem

Nir Tal

A Multiple Input Multiple Output (MIMO) transmitter/receiver system has a reduced complexity decoder for receiving and decoding simultaneously several transmitted signals. The transmitter includes a space time coded modulation (STCM) block in the decoder. The transmitter/receiver system provides a reduced complexity approximation of optimal Maximum Likelihood Estimation (MLE) methods while maintaining most of the performance gain and simplifying the implementation.

System and method of a MIMO transmitter / receiver

The present invention provides a method for reducing phase noise in OFDM systems by analyzing a time-dependent representation of the phase noise that changes in real time according to received data. The analysis of real time signals is based on processing statistical properties of phase noise and received data. The statistical properties of phase noise are represented by a covariance matrix R. The basis of the multiplicative phase noise decomposition which represents the varying in time phase noise component, is selected from the eigenvectors of R. The present invention suggests replacing the fixed representation of the phase noise as suggested by prior art with a system and time-dependent representation that changes in real time according to received data. The method according to the present invention is implemented within An OFDM transceiver.

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Hod Hasharon, Israel

Amir Leshem